Indian Ocean Glider Trajectory Profiles for Physical Properties

Glider RU29 collected 82 days of temperature, conductivity, salinity, and density profile observations in the Indian Ocean. Rutgers University and the University of Western Australia deployed the autonomous underwater vehicle as part of the Challenger Glider Mission, a modern re-creation of the 1872-1876 HMS Challenger survey. The National Centers for Environmental Information (NCEI) archived this data package in November 2018.

Use Cases

• Assimilate temperature and salinity profile data into operational ocean forecast models to improve predictive skill.
• Analyze density profiles to study water mass stratification and mixing processes along the glider's trajectory from Sri Lanka toward Mauritius.
• Validate satellite-derived sea surface temperature measurements with in-situ conductivity and temperature depth profiles.
• Model glider trajectory and energy consumption using time-series depth and location data correlated with ocean density.

Strengths

• Continuous profile measurements over an 82-day deployment from August to November 2018.
• Data checked for compliance and aggregated into a single netCDF file by the National Glider Data Assembly Center (NGDAC).
• Part of an international collaborative mission with defined scientific goals for global ocean assessment.

Limitations

• Unknown total row count and vertical resolution of the profile observations.
• Limited to a single glider deployment and a specific 2018 time period, reducing generalizability.
• Potential for sensor calibration drift or data gaps during the long autonomous mission.

Provenance

Source

Rutgers, The State University of New Jersey; Center for Ocean Observing Leadership (RU COOL) and University of Western Australia (UWA), submitted via IOOS National Glider Data Assembly Center.

Collection Method

In-situ measurements from an autonomous underwater glider (Slocum glider RU29).

Time Range

2018-08 12 to 2018-11-01

Freshness

Data collection ended in 2018; dataset is archival.

Geography

Indian Ocean, along a trajectory beginning in Sri Lanka and running toward Mauritius.